Hydrostatics: : The mathematical study of forces and pressures in liquids.

Geodesy: : Methods of surveying the earth for making maps and correlating geological, gravitational and magnetic measurements. It is a branch of geo-physics.

Cryogenics: : The science dealing with the production, control and application of very low temperatures.

Ecology: : The study of the relation of animals and plants to their surroundings, animate and inanimate.

Archaeology: : The study of antiquities.

Hygiene: : The science of health and its preservation.

Chemotherapy: : The treatment of disease by using chemical substances.

Anthropology: : 'The science that deals with the origin as well as the physical and cultural developments of mankind.

Photobiology: : The branch of biology dealing with the effect of light on organisms.

Astrochemistry: : The study of interstellar matter with a view to knowing the origin of the Universe.

Geobiology: : The biology of terrestrial life.

Bacteriology: : The study of bacteria.

Bionomics: : The study of the relation of an organism to its environments.

Crystallography: : The study of the structure, forms and properties of crystals.

Autoecology : : The study of the ecology of species.

Morphology: : The science of organic forms and structures.

Spectroscopy: : The study of matter and energy by the use of spectroscope

Otorhinolaryngology: : The study of diseases of ear, nose and throat.

Pharyngology: : The science of the pharynx (the cavity at the back of the mouth where the passages to the nose, lungs and stomach begin) and its diseases.

Cytochemistry: : The branch of cytology dealing with the chemistry of cells.

Odontology: : The scientific study of the teeth.

Bioclimatology: : The study of the effects of climate upon living organisms.

Ethnography: : A branch of anthropology dealing with the scientific description of individual cultures.

Nosology : : The branch of medicine that deals with the classification of diseases.

Geography: : The development of science of the earth's surface, physical features, climate, population, etc.

Metallurgy: : The process of extracting metals from their ores.

Agrostology: : The study of grasses.

Hydropathy: : The treatment of disease by the internal and external use of water.

Entomology: : The study of insects.

Ethology: : The study of animal behaviour.

Cryptography: : The study of cyphers or codes (secret writings).

Biometeorology: : .The study of the effects of atmospheric conditions on living organisms.

Astronomy: : The study of the heavenly bodies.

Pathology: : Branch of medicine that studies the causes and nature of diseases, especially the structural and functional changes brought about by diseases.

Cryotherapy: : Use of cold, but not freezing cold, as a form of treatment. Hypothermia may be deliberately induced during surgery, for instance, to decrease a patient's oxygen requirement.

Ornithology: : The study of birds. :

Aeronomy: : The study of the Earth's upper atmosphere, including its composition, density, temperature, and chemical reactions, as recorded by sounding rockets and earth satellites.

Rheology: : The study of the deformation and flow of matter.

Limnology : : The study of lakes. :

Paleontology : : The study of fossils.

Physiography: : The science of physical geography.

Philology: : The study of written records, their authenticity, etc.

Astronautics: : The science involved in space travel.

Physiology: : The study of the functioning of the various organs of living beings.

Astrology: : The ancient art (now mostly termed a pseudo-science) of predicting the course of human destinies with the help of indications deduced from the position and movement of the heavenly bodies.

Climatotherapy : : The treatment of disease through suitable climatic environment, often, but not always, found in recognised health resorts. As climate is subject to seasonal variations, the required environment may have to be sought in different localities at different periods of the year.

Topography: : special description of a part or region.

Epidemiology: : The branch of medicine dealing with epidemic diseases.

Botany: : The study of plants. :

Chemistry: : The study of elements and their laws of combination and behaviour.

Hydrometeorology: : The study of the occurrence, movement and changes in the state of water in the atmosphere.

Radiobiology: : The branch of biology which deals with the effects of radiations on living organisms.

Phycology: : 'The study of algae. :

Osteopathy: : 1\ therapeutic system based upon detecting and correcting faulty structure in bones and muscles.

Glaciology: : The study of ice and the action of ice in all its forms

Bionics: : The study of functions, characteristics and phenomena observed in the living world and the application of this knowledge to the world of machines.

Astrophysics: : The branch of astronomy concerned with the physical nature of heavenly bodies.

Geology: : The science that deals with the physical history of the earth.

Cosmography: : The science that describes and maps the main features of the Universe.

Cryobiology : : The science that deals with the study of organisms, especially warm-blooded animals, at low temperature. The principal effect of cold on living tissues is destruction of life or preservation of it at a reduced level of activity.

Phrenology: : The study of the faculties and qualities of minds from the shape of the skull.